Internal-combustion engine



Nov. 8, 1927.

G. NUESELL INTERNAL COMBUSTION ENGINE 3 Sheets-Sheet 1 tiifisitii$ Iii-I Filed Nov. 19, 1926 AT I'ORN EY Nov. 8, 1927.

I fi er/11d Missal] W0 BY M 0 AI IURNEY Nov. 8, 1927. 1,648,780

G.- NUESELL vINTERNAL COMBUSTION ENGINE Filed NOV. 19, 1926 5 Sheets-Sheet 3 fiemzil wsell INVENTOR ATTO R N EY Patented Nov. 8, 1927.

GERARD NUESELL, 0F BROOKLYN, NEW YORK.

INTERNAL-COMBUSTION ENGINE.

Application filed November 19, 1926. Serial 'No. 149,415.

This invention relates to improvements in internal combustion engines.

The primary object of the invention resides in an internal combustion engine of the fourcycle type which is greatly simplified by the elimination of the crank shaft, cam shafts and fly wheel now commonly used in engines of this kind, thereby providing a simple and smooth running engine.

Another object -of the invention is to provide an internal combustion engine of the V-type, that is, an engine having opposed cyhnders disposed at right angle to each other, and which engine may be constructed of any number of cylinders, and which cylinders fire on each revolution of the engine shaft but at different intervals, wherebyv an even power is produced. a

A further object of the invention resides in the construction of an engine having a straight engine shaft on whlch a cam is mounted for actuating the pistons at proper intervals, while cams for operating the inlet and exhaust valves, and the ignition system are also mounted on said shaft.-

WVith these and other objects in View, the invention resides in certain novel construction and combination and arrangement 0 parts, the essential features of which are hereinafter fully described, are particularly pointed out in the appended claims, and are illustrated in the accompanying drawing, in

which Figure 1 is a vertical transverse sectional View through my improved engine.

Figure 2 is a vertical sectional view on the a line 2-2 of Figure 1.

Figure 3 is an enlarged detail sectional view on the line 3-3 of Figure 1.

Figure 4 is a perspective view of the en gine shaft with the cams mounted thereon.

Figures is a detail perspective view of the piston.

Figure 6 is an enlarged detail View of the ignitlon operating means.

Referring more particularly to the drawings, the reference numeral 10 designates m improved engine in its entirety, and which includes a pair of cylinders 11 and 12 disosed'at right angle to each other as shown 1n Figure 1 of the drawings, and which engines are known as the V-type. The two cylinders are identical in construction so that a descri tion of one will suflice for theother.

Eac cylinder is enclosed by a water jacket 13, while both cylinders open into a single the axis of rollers 23 and casing 14:, within which an engine shaft 15 is journaled for rotation. Fixed to the shaft 15 is an eight-shaped cam 16 which is provided with a groove or track 17 which opens on to the periphery of the cam through a slot 18. The track is of a shape corresponding to the shape of the periphery of the cam.

' Slidable within each cylinder is a piston 19 which includes a piston head 20, a piston rod 21 rigidly secured to the underside of said head, while the free end of the piston rod is pivotally connected to a link 22 which extends through the slot 18 and carries sets of rollers 23 and 24 for respective engagement with the outer periphery of the cam 16 and with the inner walls of thegroove or track 17. The walls of the groove 17 prevent the accidental upward movement of the piston as the high point of the cam engages the set of rollers 23, as it will be appreciated that the centrifugal force of the cam tends to throw the piston upward. The piston stroke is controlled by the shape of the outer periphery of the cam 16 and the walls of the recess. 17

The cam is so shaped thatthe high spots are diametrically opposed so as to lift the piston stroke, while the low spots of the cam permit of the two downward strokes of the piston on each revolution of the shaft 15, namely the power stroke, and the intake stroke. The cylinders 11 and 12 are so disposed that when the piston of one cylinder is on its upward stroke, the piston of the other cylinder is on its downward stroke. However, if a multiple of cylinders are placed side by side and all connected with the same engine shaft, a steady and smooth running engine will be provided, as the cylinders will be timed to explode "at successive intervals.

For guiding the piston on its upward and downward strokes, I provide rails 25 which extend from the underside of the piston head 20 parallel to the side walls of the cylinder and which are disposed on opposite sides of the piston rod 21. The rails extend below engage rollers 26 journalled in brackets extendin from the. inner walls of the casing .14, he rails 25 are braced by a cross arm 27 and serve to relieve the lateral strain on the piston when in a downward position.

Each cylinder is provided with an intake pipe 27 and an exhaust pipe 28, controlled respectively by inlet and exhaust valves 29 and 30. A valve stem 31 extends from the inlet valve to a point in the path of movement "of the peripheral edge of a cam 32 fixedly mounted on the shaft 15 at one side of the cam 16, the high spot of which is so arranged as to open the inlet port in the valve by lifting the valve stem at the required timed. A spring 33 tends to normally keep the inlet valve in a seated .or closed position. A cam 34 is disposed on the opposite side of the cam 16 and is also fixed to the shaft 15. The high spot of the cam 34' is adapted to lift the valve stem 35 of the exhaust valve 30, to unseat the valve at the-proper time to permit the exhaust gases to escape through the exhaust pipe 28. A spring 36 tends to keep the exhaustvalve 30 in a normally seated position.

The cylinders are provided with spark plugs 37 which are adapted to fire upon the limit of the upward movement of the piston on the compression stroke. in which the firing is controlled by cams 38 mounted on the shaft 15 and disposed beside the cams 32.

a Each cam has a high spot which serves to lift a rod 39 which is slidably monnted'in the casing 14 and which rod has one of its rod 39, the spring 40 moves the rod down and opens the circuit as will be readily understood.

In operation, the gas is taken into the c linder upon the downward movement of the piston, at which time one of thehigh spots of the cam 16 is mo ing-away from the rollers 23. and the high spot of the intake cam 32 is lifting the intake valve 29 off itsseat. As the piston moves. downward by reason of the low spots on the cam 16, the

, valve 29 closes, and as the other,,high point of the cam 16 gradually engages the rollers 23. the piston is moved upward to compress the charge of gas. Both the intake valve 29 and the exhaust valve 30 are in a closedposition. As the other low spot of thecam 16 engages the rollers23, the piston 1s m a position to move downward vat which t1me the ignition system is operated by the cam 38 to produce a spark at the spark plug, thereby causing an exploslon of the gases within the cylinder. The piston moves downward and on its next upward stroke, the cam 34 opens the exhaust valve 30 and permits the exhaust gases to. escape through the exhaust pipe 28. I have only described .vention, it is obvious that many of the details may be varied without in any way departing from the spirit of my invention, and I therefore do not limit myself to the exact details of construction herein set forth nor to anything less than the wholeof my invention limited only by the appended claims. What is claimedas new is 1. An internal combustion engine comprising a cylinder, a piston head slidable within said cylinder, a rotatable engine shaft, afigure eight shaped cam mounted on said engine shaft, :1. piston rod" extending from said piston head, rollers carried by the free end of said piston rod and engaging the periphery of said cam, rails carried b said piston head and rollers engaging sai rails for guiding said piston head during its reciprocation.

2. An internal combustion engine comprising a cylinder, a piston head slidable within said cylinder, a rotatable engine shaft, .a figure elght shaped cam mounted on said engine shaft, apiston rod extending from said pistonhead. and rollers carried by the free end of said piston rod and engaging the periphery of said cam, said cam having a groove provided therein of a shape corresponding to the shape of the periphery of said cam and communicating therewith, a'

link pivotally connected to the free end of said piston rod, and rollers carried by said link and movable in said groove. 2

3. In an internal combustion engine, the combination of a cylinder, a piston reciprocable therein, and means for guiding said iston during its reciprocation, said means mcluding rails carried by said pistons, and rollers engagng said rails.

4. In an internal combustion engine. the

combination of a cylinder. a piston head reclprocable therein, a plston rod extending from said piston head, rails extending from said piston head on opposite sides of said piston rod, and rollers engageable with said rails, "substantially as and for the purpose specified.

Intestimony whereof I have aflixed my 7 signature.

GERARD 'N'UES LL. 

